Do please tell... which nations are Christian nations?
The US is not a Christians nation seeing the majority of people in the US are not following the Jesus of the Bibl;e or His teachings.
Apparently you've been listening to Leftists that try and claim the United States was never a Christian nation. It still is a Christian nation today, and will remain so per the foundation the original founders set up per the Constitution of The United States of America!
Nor is the U.S. a Democracy, although democratic principles are written in the U.S. Constitution. A Democracy the founders steered clear from, since ancient Greece was the pattern for a Democracy where everyone had to agree before moving forward.
The United States of America is a
Constitutional Republic. That means elected representatives chosen by "We the people" to represent them, instead of having a rabble mob Democracy like ancient Greece where every soul had to agree.
Britain was the 1st Christian nation per history, which means the majority of its people turned to The Gospel and believed on Jesus Christ. The Catholics sent to the British Isles to spread The Gospel found that Christian bishops were already established there (as per St. Augustine's own experience). According to pagan Roman historians like Tacitus, Claudia and her father the king of the Bretons were captured by the Romans and brought to Rome when Rome was still under paganism. A palace was built for the British king and his family while captive in Rome, called the
Palatium Britannicum. They were Christians, and many of the Roman citizens when they found that out, wanted them executed.
When the early European nations were under various forms of Baal worship, and The Gospel began to reach them, many of the European nations converted to Christianity in majority. That was history, something you apparently are not aware of, otherwise you wouldn't follow ignorant Leftists that try and disclaim how God has influenced early Western culture through His Son Jesus Christ.